Protocol Title: A 14-Day, Randomized, Double-Blind, Comparative Viral Kinetic Study of Elvucitabine Versus Lamivudine Administered Once Daily to HIV-1 Infected Subjects With a Documented M184V Variant Protocol Number: ACH443-014A Clinical Phase: 2a Primary Objectives: • To assess the viral kinetics of 10 mg of elvucitabine administered once daily (QD) for 14 days in combination with background antiretroviral therapy in HIV-1-infected subjects with a documented M184V variant